A highway multilayer crash barrier

Abstract

The application relates to the technical field of highway engineering, and discloses a highway multilayer anti-collision guardrail which comprises a bottom plate, the top middle of the bottom plate is fixedly connected with a vertical plate, a plurality of groups of rotating rollers are arranged at equal intervals on the front surface of the vertical plate, a plurality of groups of buffer assemblies I are installed on the front surface of the vertical plate, and the rotating rollers are installed on the vertical plate through the buffer assemblies I. The multilayer buffer structure enhances the protection performance, reduces the damage caused by the collision between the automobile and the protection guardrail when the automobile is out of control, reduces the impact force of the automobile during use, plays a protection role, the rotating rollers in contact with the automobile are displaced inward to form a concave area, so that the front end of the automobile can be relatively clamped among the multiple rotating rollers, the tendency of the automobile to continue to slide forward after colliding with the protection device is slowed down, other vehicles are avoided from being touched, the buffer effect is improved, the rotating rollers drive the connecting rods and the contact blocks to slide along the movable cavities while rotating, the buffer effect is further improved, and the buffer effect is better.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of highway engineering, and particularly relates to a highway multilayer anti-collision guardrail. BACKGROUND

[0002] With the continuous development of economic construction, the transportation is increasingly busy, and the highway network development of each place is rapid, and the occurrence rate of traffic accidents also presents an upward trend. At present, the protection device on both sides of the highway is mainly composed of a stand column and a guardrail plate located on the upper part of the stand column, the guardrail plate is made of a steel plate, and the stand column and the guardrail plate are both rigid materials. The existing protection fence on the market has a simple structure, limited anti-collision and buffer levels, and general buffer effect for high speed and heavy impact. After the anti-collision guardrail is impacted by a large impact force, only the deformation damage of the guardrail plate can absorb energy, the deformation capacity and the energy absorption capacity are limited, and under the impact of the car, the guardrail plate is easy to break, so that the car can crash the guardrail and directly cross the guardrail, which still has a great risk, and is easy to cause secondary injury to the safety of the vehicle and the crew. Therefore, it has great practical value to design a highway safety protection facility with a multilayer protection structure. SUMMARY

[0003] The present application relates to the technical field of highway engineering, and particularly relates to a highway multilayer anti-collision guardrail.

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0005] The utility model provides a highway multilayer crash barrier, including bottom plate, the middle part of top of bottom plate is fixedly connected with vertical board, the front of vertical board is equipped with a plurality of groups of rotating roller in equal interval, a plurality of groups of buffer assembly no.

[0006] Preferably, the back of the vertical plate is provided with a support assembly, the support assembly includes a moving plate, the moving plate is attached to the back side edge of the bottom plate, the inner part of the two ends of the bottom plate on the back side of the vertical plate is respectively provided with a containing cavity two, the containing cavity two is slidably installed with a moving rod two, one end of the moving rod is fixedly connected with the moving plate, the vertical plate is provided with a through hole two at the corresponding position of the sleeve rod, the end of the moving rod one away from the mounting block penetrates the inner cavity of the sleeve rod and is slidably arranged in the through hole one, a plurality of groups of storage grooves are vertically arranged on the back of the vertical plate, the storage grooves correspond to the through hole two, a plurality of groups of sliding grooves are provided on the top of the end of the bottom plate behind the vertical plate, the sliding grooves correspond to the storage grooves one by one, an L-shaped support rod is movably installed in the storage groove and the sliding groove, the vertical part of the L-shaped support rod is arranged in the storage groove, the horizontal part of the L-shaped support rod is slidably arranged in the sliding groove, the end of the moving rod one away from the mounting block is fixedly connected to the side wall of the vertical part of the L-shaped support rod, the side edge of the L-shaped support rod is fixedly connected with an inclined support rod, and the horizontal part of the L-shaped support rod is attached to the side wall of the moving plate.

[0007] Preferably, the two sides of the end of the sleeve rod close to the vertical plate are respectively provided with buffer assemblies three, the buffer assembly three comprises a shell arranged between the baffle and the vertical plate, the shell is fixedly connected with the outer side wall of the sleeve rod, a containing cavity one is formed in the middle part of the shell, a through hole one is formed in the side wall of the sleeve rod corresponding to the containing cavity one, a plug column is slidably arranged in the through hole one, the plug column is matched with the through hole one and the containing cavity one respectively, a spring three for resetting the plug column is arranged in the containing cavity one, and a plurality of plug holes matched with the plug column are formed in the two sides of the section of the moving block one in the sleeve rod.

[0008] Preferably, the cross section of the moving rod one is rectangular, and the side wall of the moving rod one is attached to the inner wall of the inner cavity of the sleeve rod.

[0009] Preferably, the outer side wall of the rotating roller is fixedly connected with a rubber layer.

[0010] Preferably, two connecting rods are arranged on one side of the rotating roller, and the two connecting rods are symmetrically arranged on the two sides of the rotating shaft.

[0011] Preferably, the plug hole is in an arc shape, and the end of the plug column matched with the plug hole is in an arc shape and matched with the plug hole.

[0012] Preferably, a spring four for resetting the moving rod two is arranged in the containing cavity two.

[0013] The beneficial effects of the present application are:

[0014] 1. The present application enhances the protection performance by arranging a multi-layer buffer structure, reduces the damage caused by the collision between the automobile and the protective guardrail when the automobile loses control, and when the automobile loses control and collides with the device, the automobile will first contact the rotating roller, the rotating roller will be extruded, the rotating roller will drive the mounting block to move through the rotating shaft, and then the moving rod one will slide along the inner cavity of the sleeve rod, at the same time, the mounting block will extrude the spring one, the spring one will be compressed to play a role in buffering the force, the impact force of the automobile will be reduced, and the protection effect will be achieved, and the rotating roller in contact with the automobile will be displaced inward to form a recessed area, so that the front end of the automobile can be relatively clamped between a plurality of rotating rollers, the tendency of the automobile to continue to slide forward after colliding with the protective device is slowed down, and the automobile avoids colliding with other vehicles, in addition, when the front end of the automobile contacts the rotating roller, the rotating roller can rotate to further unload the force and improve the buffering effect, and the connecting rod and the contact block will slide along the movable cavity while the rotating roller rotates, at this time, the spring two will be compressed to further play a buffering role, and the buffering effect is better.

[0015] 2. The overall strength of the device is improved by setting the supporting assembly. When the moving rod is pushed during use, the moving rod one slides along the inner cavity of the sleeve rod, and the end of the moving rod one pushes the L-shaped supporting rod outward along the through hole two, so that the L-shaped supporting rod moves outward along the sliding groove, and the horizontal part of the L-shaped supporting rod is contacted by the side edge of the moving plate, which synchronously pushes the moving plate to move away from the vertical plate. The cooperation of the moving rod two and the containing cavity two makes the moving plate move outward stably. After the moving plate moves outward for a distance, it is equivalent to increasing the grounding area of the bottom plate located behind the vertical plate. At the same time, the L-shaped supporting rod and the inclined supporting rod can enhance the overall strength of the device, so that the device will not be easily damaged, and the use is safer.

[0016] 3. Under the push of spring three, the plug post is inserted into the socket. When the moving rod one slides along the inner cavity of the sleeve rod, the plug post will be pressed into another adjacent socket. During the replacement process, a certain resistance will be generated, which can further play a buffering role to improve the buffering effect.

[0017] 4. When the moving plate drives the moving rod to move outward along the containing cavity two, the spring four is compressed, and the spring four provides a reverse force, thereby improving the buffering effect of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structural schematic view of a highway multilayer anti-collision guardrail is proposed for the embodiment of the present application.

[0019] Figure 2 A front view of a highway multilayer anti-collision guardrail is proposed for the embodiment of the present application.

[0020] Figure 3 A side view of a highway multilayer anti-collision guardrail is proposed for the embodiment of the present application.

[0021] Figure 4 A rear view of a highway multilayer anti-collision guardrail is proposed for the embodiment of the present application.

[0022] Figure 5 A side view of a highway multilayer anti-collision guardrail is proposed for the embodiment of the present application.

[0023] Figure 6 A top view of a highway multilayer anti-collision guardrail is proposed for the embodiment of the present application.

[0024] Figure 7 A Figure 5 A local structure enlargement view at A in the middle.

[0025] Figure 8 A disc top view of a highway multilayer anti-collision guardrail is proposed for the embodiment of the present application.

[0026] Figure 9 For Figure 5 Local structure amplification diagram at B in the middle.

[0027] In the figure: 1 - bottom plate, 2 - vertical plate, 3 - buffer assembly one, 31 - sleeve rod, 32 - baffle, 33 - moving rod one, 34 - spring one, 35 - mounting block, 4 - rotating roller, 5 - connecting block, 6 - buffer assembly two, 61 - disc, 62 - connecting rod, 63 - contact block, 64 - movable cavity, 65 - spring two, 7 - buffer assembly three, 71 - shell, 72 - containing cavity one, 73 - through hole one, 74 - spring three, 75 - insertion hole, 76 - insertion column, 8 - support assembly, 81 - moving plate, 82 - inclined support rod, 83 - storage slot, 84 - L-shaped support rod, 85 - sliding slot, 9 - rotating shaft, 10 - containing cavity two, 11 - spring four, 12 - moving rod two, 13 - through hole two. Embodiments

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all.

[0029] In one embodiment, refer to Figures 1 to 9The utility model provides a highway multilayer crash barrier, including bottom plate 1, the middle part of top of bottom plate 1 is fixedly connected with vertical plate 2, the front of vertical plate 2 is provided with a plurality of groups of rotating roller 4 at equal intervals, a plurality of groups of buffer assembly one 3 are installed to the front of vertical plate 2, rotating roller 4 is installed on vertical plate 2 through buffer assembly one 3, buffer assembly one 3 includes the sleeve rod 31 of installing the front of vertical plate 2, the inner chamber of sleeve rod 31 is slidably installed with mobile rod one 33, and one end of mobile rod one 33 extends to the outside of sleeve rod 31 and is fixedly connected with mounting block 35, the outer lateral wall of the middle part of sleeve rod 31 is fixedly connected with baffle 32, spring one 34 is arranged between baffle 32 and mounting block 35, spring one 34 is set on the outside of sleeve rod 31 and mobile rod one 33, and the both ends of spring one 34 are fixedly connected with baffle 32 and mounting block 35 respectively, and the opposite side of two mounting blocks 35 in the same vertical direction is rotatably installed with rotating shaft 9, and rotating roller 4 is fixedly installed at the middle position of rotating shaft 9, and the side of mounting block 35 close to rotating roller 4 is installed with buffer assembly two 6, buffer assembly two 6 includes connecting block 5, connecting block 5 is fixedly connected at the side of mounting block 35 close to rotating roller 4, the side of connecting block 5 close to rotating roller 4 is fixedly connected with disc 61, the side of disc 61 close to rotating roller 4 is provided with the notched of arc shape, the inside of disc 61 is provided with the movable cavity 64 of arc shape at the corresponding position of notched, the both ends of rotating roller 4 are fixedly connected with connecting rod 62, connecting rod 62 penetrates the notched and extends into movable cavity 64, and one end of connecting rod 62 located in movable cavity 64 is fixedly connected with contact block 63, contact block 63 is slidably arranged in movable cavity 64, and spring two 65 is installed in movable cavity 64 to reset contact block 63.

[0030] When using, bottom plate 1 is fixedly installed on the road side, so that the rotating roller 4 of the device faces the middle of the road, when the car out of control collides with the device, the car will first contact with rotating roller 4, extruding rotating roller 4, rotating roller 4 moves through rotating shaft 9 and drives mounting block 35, further pushes mobile rod one 33 along the inner chamber of sleeve rod 31 and slides, at the same time, mounting block 35 extrudes spring one 34, spring one 34 plays the role of buffering unloading force, reduces the impact force of the car, plays the role of protection, and rotating roller 4 in contact with the car can be displaced inward, forms a recessed area, so that the front end of the car can be relatively connected in a plurality of rotating rollers 4, slows down the tendency of the car and the protective device colliding and continuing to slide forward, avoids touching other vehicles, in addition, when the front end of the car contacts with rotating roller 4, rotating roller 4 can rotate, further unloads, improves the buffering effect, rotating roller 4 rotates simultaneously and drives connecting rod 62 and contact block 63 along movable cavity 64 to slide, at this time, spring two 65 is compressed, further plays the role of buffering, and the buffering effect is better.

[0031] As a preferred embodiment of the present application, the back of the vertical plate 2 is provided with a support assembly 8, which comprises a moving plate 81, which is arranged on the back side of the bottom plate 1, and a receiving cavity two 10 is arranged in the middle of the two ends of the back of the vertical plate 2, a moving rod two 12 is slidably arranged in the receiving cavity two 10, one end of the moving rod is fixedly connected with the moving plate 81, a through hole two 13 is arranged in the vertical plate 2 corresponding to the sleeve rod 31, one end of the moving rod one 33 away from the mounting block 35 penetrates the inner cavity of the sleeve rod 31 and is slidably arranged in the through hole one 73, a plurality of storage grooves 83 are vertically arranged on the back of the vertical plate 2, the storage grooves 83 correspond to the through hole two 13, a plurality of sliding grooves 85 are arranged on the top of the end of the bottom plate 1 behind the vertical plate 2, the sliding grooves 85 correspond to the storage grooves 83 one by one, an L-shaped support rod 84 is movably arranged in the storage groove 83 and the sliding groove 85, the vertical part of the L-shaped support rod 84 is arranged in the storage groove 83, the horizontal part of the L-shaped support rod 84 is slidably arranged in the sliding groove 85, one end of the moving rod one 33 away from the mounting block 35 is fixedly connected to the side wall of the vertical part of the L-shaped support rod 84, the side of the L-shaped support rod 84 is fixedly connected with the inclined support rod 82, and the horizontal part of the L-shaped support rod 84 is in contact with the side wall of the moving plate 81. When the moving rod one 33 is pushed, the moving rod one 33 slides along the inner cavity of the sleeve rod 31, and the end of the moving rod one 33 pushes the L-shaped support rod 84 outward along the through hole two 13, so that the L-shaped support rod 84 moves outward along the sliding groove 85, and the horizontal part of the L-shaped support rod 84 is in contact with the side of the moving plate 81, which synchronously pushes the moving plate 81 to move away from the vertical plate 2, and the cooperation of the moving rod two 12 and the receiving cavity two 10 makes the moving plate 81 stably move outward, and after the moving plate 81 moves outward by a distance, the ground contact area of the bottom plate 1 behind the vertical plate 2 is increased, and the cooperation of the L-shaped support rod 84 and the inclined support rod 82 can enhance the overall strength of the device, so that the device is not easily damaged by impact, and the use is safer. In addition, the horizontal parts of the plurality of L-shaped support rods 84 are in contact with the moving plate 81, and any one of the L-shaped support rods 84 can push the moving plate 81 to move outward, and the other L-shaped support rods 84 that are not touched will not move, so that the rotating roller 4 in contact with the automobile can move, and the rotating roller 4 not in contact remains in the original position, so as to surround the position of the automobile in contact with the device and play a protective role.

[0032] As a preferred embodiment of the present application, the sleeve rod 31 is provided with a buffer assembly three 7 on both sides of one end of the vertical plate 2, the buffer assembly three 7 comprises a shell 71 arranged between the baffle 32 and the vertical plate 2, the shell 71 is fixedly connected with the outer side wall of the sleeve rod 31, a containing cavity one 72 is formed in the middle of the shell 71, a through hole one 73 is formed in the side wall of the sleeve rod 31 corresponding to the containing cavity one 72, a plug column 76 is slidably arranged in the through hole one 73, the plug column 76 is matched with the through hole one 73 and the containing cavity one 72 respectively, a spring three 74 is arranged in the containing cavity one 72 to reset the plug column 76, a plurality of plug holes 75 matched with the plug column 76 are formed in the upper and lower sides of a section of the moving block one in the sleeve rod 31, in use, the plug column 76 is inserted into the plug hole 75 under the pushing of the spring three 74, when the moving rod one 33 slides along the inner cavity of the sleeve rod 31, the plug column 76 is pressed to insert into another adjacent plug hole 75, a certain resistance is generated during replacement, so that the buffering effect is further improved.

[0033] As a preferred embodiment of the present application, the cross section of the moving rod one 33 is rectangular, the side wall of the moving rod one 33 is attached to the inner wall of the inner cavity of the sleeve rod 31, so as to limit the movement direction of the moving rod one 33, so that the moving rod one 33 can only move along the inner cavity of the sleeve rod 31 and cannot self-transmit, thereby making the installation and use of the rotating roller 4 more stable.

[0034] As a preferred embodiment of the present application, the outer side wall of the rotating roller 4 is fixedly connected with a rubber layer, so as to improve the buffering effect.

[0035] As a preferred embodiment of the present application, two connecting rods 62 are arranged on one side of the rotating roller 4, the two connecting rods 62 are symmetrically arranged on both sides of the rotating shaft 9, so as to simultaneously press the two springs two 65 and improve the buffering effect.

[0036] As a preferred embodiment of the present application, the plug hole 75 is arranged in an arc shape, and the end of the plug column 76 matched with the plug hole 75 is arranged in an arc shape and matched with the plug hole 75, so as to make the plug column 76 enter another plug hole 75 from one plug hole 75.

[0037] As a preferred embodiment of the present application, the containing cavity two 10 is provided with a spring four 11 to reset the moving rod two 12, when the moving plate 81 drives the moving rod two 12 to move outward along the containing cavity two 10, the spring four 11 is compressed, the spring four 11 provides a reverse force, thereby improving the buffering effect of the device.

[0038] The working principle of the present application is as follows: when the car loses control and collides with the device, the car will first contact the rotating roller 4, extruding the rotating roller 4, which drives the mounting block 35 to move through the rotating shaft 9, and in turn pushes the moving rod one 33 to slide along the inner cavity of the sleeve rod 31, while the mounting block 35 extrudes the spring one 34, which plays a role in buffering the force, reducing the impact force of the car and playing a protective role. In addition, the rotating roller 4 in contact with the car will displace inward, forming a concave area, so that the front end of the car can be relatively clamped between multiple rotating rollers 4, slowing down the tendency of the car to continue to slide forward after colliding with the protective device, avoiding touching other vehicles. In addition, when the front end of the car contacts the rotating roller 4, the rotating roller 4 can rotate to further unload the force and improve the buffering effect. The rotating roller 4 rotates at the same time to drive the connecting rod 62 and the contact block 63 to slide along the movable cavity 64. At this time, the spring two 65 is compressed, further playing a buffering role, and the buffering effect is better. When the moving rod one 33 is pushed, the moving rod one 33 slides along the inner cavity of the sleeve rod 31, and the end of the moving rod one 33 pushes the L-shaped support rod 84 outward along the through hole two 13, so that the L-shaped support rod 84 moves outward along the sliding groove 85, and the horizontal part of the L-shaped support rod 84 is in contact with the side edge of the moving plate 81, which synchronously pushes the moving plate 81 to move away from the vertical plate 2. Through the cooperation of the moving rod two 12 and the containing cavity two 10, the moving plate 81 is stably moved outward. After the moving plate 81 moves outward by a distance, it is equivalent to increasing the grounding area of the bottom plate 1 behind the vertical plate 2. At the same time, cooperating with the L-shaped support rod 84 and the inclined support rod 82 can enhance the overall strength of the device, so that the device will not be easily damaged, and the use is safer.

[0039] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes within the technical range disclosed by the present application according to the technical solution and inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A multi-layered highway crash barrier, comprising a base plate (1), wherein a vertical plate (2) is fixedly connected to the middle of the top of the base plate (1), characterized in that, Multiple sets of rotating rollers (4) are evenly spaced on the front of the vertical plate (2). Multiple sets of buffer components (3) are installed on the front of the vertical plate (2). The rotating rollers (4) are installed on the vertical plate (2) through the buffer components (3). The buffer components (3) include a sleeve rod (31) installed on the front of the vertical plate (2). A movable rod (33) is slidably installed in the inner cavity of the sleeve rod (31). A mounting rod (33) is fixedly connected to one end of the movable rod (33) extending to the outside of the sleeve rod (31). A baffle (32) is fixedly connected to the outer wall of the middle part of the sleeve rod (31) of the block (35). A spring (34) is provided between the baffle (32) and the mounting block (35). The spring (34) is sleeved on the outside of the sleeve rod (31) and the moving rod (33). The two ends of the spring (34) are fixedly connected to the baffle (32) and the mounting block (35) respectively. Two mounting blocks (35) in the same vertical direction are rotatably mounted on opposite sides with a rotating shaft (9). The rotating roller (4) is fixed. The mounting block (35) is fixedly installed at the middle position of the rotating shaft (9). A buffer assembly two (6) is installed on the side of the mounting block (35) near the rotating roller (4). The buffer assembly two (6) includes a connecting block (5). The connecting block (5) is fixedly connected to the side of the mounting block (35) near the rotating roller (4). A disc (61) is fixedly connected to the side of the connecting block (5) near the rotating roller (4). An arc-shaped groove is opened on the side of the disc (61) near the rotating roller (4). The interior of the disc (61) is connected to the rotating roller (4). An arc-shaped movable cavity (64) is provided at the corresponding position of the slot. Connecting rods (62) are fixedly connected to both ends of the rotating roller (4). The connecting rods (62) pass through the slot and extend into the movable cavity (64). A contact block (63) is fixedly connected to one end of the connecting rod (62) inside the movable cavity (64). The contact block (63) is slidably disposed inside the movable cavity (64). A spring (65) is installed inside the movable cavity (64) to reset the contact block (63).

2. The multi-layered highway crash barrier according to claim 1, characterized in that, A support assembly (8) is installed on the back of the vertical plate (2). The support assembly (8) includes a movable plate (81). The movable plate (81) is fitted to the back side of the base plate (1). The base plate (1) has two receiving cavities (10) at its two ends on the back side of the vertical plate (2). A movable rod (12) is slidably installed in the receiving cavity (10). One end of the movable rod is fixedly connected to the movable plate (81). A through hole (13) is opened inside the vertical plate (2) at the position corresponding to the sleeve rod (31). The end of the movable rod (33) away from the mounting block (35) passes through the inner cavity of the sleeve rod (31) and is slidably installed in the through hole (73). Multiple sets of storage slots (83) are vertically opened on the back of the vertical plate (2). The storage groove (83) corresponds to the through hole two (13). The bottom plate (1) is located at the top of one end behind the vertical plate (2) and multiple sets of sliding grooves (85) are opened. The sliding grooves (85) correspond one-to-one with the storage grooves (83). L-shaped support rods (84) are movably installed in the storage grooves (83) and sliding grooves (85). The vertical part of the L-shaped support rod (84) is set in the storage groove (83), and the horizontal part of the L-shaped support rod (84) is slidably set in the sliding groove (85). The end of the moving rod one (33) away from the mounting block (35) is fixedly connected to the side wall of the vertical part of the L-shaped support rod (84). The side of the L-shaped support rod (84) is fixedly connected to the diagonal brace (82), and the horizontal part of the L-shaped support rod (84) is in contact with the side wall of the moving plate (81).

3. A multi-layered highway crash barrier according to claim 1, characterized in that, The sleeve rod (31) is provided with buffer components three (7) on the upper and lower sides of the end near the vertical plate (2). The buffer components three (7) include a housing (71) between the baffle (32) and the vertical plate (2). The housing (71) is fixedly connected to the outer wall of the sleeve rod (31). A receiving cavity one (72) is opened in the middle of the housing (71). A through hole one (73) is opened on the side wall of the sleeve rod (31) at a position corresponding to the receiving cavity one (72). A plug (76) is slidably arranged in the through hole one (73). The plug (76) is adapted to the through hole one (73) and the receiving cavity one (72) respectively. A spring three (74) is installed inside the receiving cavity one (72) to reset the plug (76). Multiple sets of plug holes (75) for plugging into the plug (76) are opened on the upper and lower sides of a section of the moving rod one located inside the sleeve rod (31).

4. A multi-layered highway crash barrier according to claim 1, characterized in that, The cross-section of the movable rod (33) is rectangular, and the side wall of the movable rod (33) is in contact with the inner wall of the inner cavity of the sleeve rod (31).

5. A multi-layered highway crash barrier according to claim 1, characterized in that, The outer wall of the roller (4) is fixedly connected with a rubber layer.

6. A multi-layered highway crash barrier according to claim 1, characterized in that, Two connecting rods (62) are provided on one side of the rotating roller (4), and the two connecting rods (62) are symmetrically arranged on both sides of the rotating shaft (9).

7. A multi-layered highway crash barrier according to claim 3, characterized in that, The socket (75) is configured in an arc shape, and the end of the plug (76) that is plugged into the socket (75) is configured in an arc shape and is adapted to the socket (75).

8. A multi-layered highway crash barrier according to claim 2, characterized in that, A spring four (11) is installed in the second (10) housing to reset the second (12) moving rod.

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